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  1. 1 9
  2. 1 8
  3. 123 456
  4. 555 555
  5. 123 594
  6. 0 0
Compilation error #stdin compilation error #stdout 0s 0KB
stdin
Standard input is empty
compilation info
prog.c:1:1: error: expected identifier or '(' before numeric constant
 1 9
 ^
stdout
Standard output is empty